An elf is a scale in a regular temperament which is tempered from a JI scale in the group of the temperament which is epimorphic via a val V which may not be, and characteristically is not, a val supporting the temperament. This allows the elf to have more freedom in scale size and structure but still to possess the coherence induced by the epimorphic mapping.
To construct an elf, take the intervals in the JI group of the temperament which lie within an octave and keep only the least complex (in terms of Benedetti height) representative for each corresponding interval of the temperament. Order the remaining JI intervals by increasing temperamental complexity, breaking ties by increasing Benedetti complexity. For each integer value 1 ≤ i ≤ V(2), set the ith element of a transversal for the scale to be the first interval c in the listing such that V(c) = i; which is to say, the interval of least temperamental complexity with ties broken by Benedetti height. The tempering of this transversal by a tuning map for the temperament is the elf.
Table of Contents
Definition of elves
An elf is a scale in a regular temperament which is tempered from a JI scale in the group of the temperament which is epimorphic via a val V which may not be, and characteristically is not, a val supporting the temperament. This allows the elf to have more freedom in scale size and structure but still to possess the coherence induced by the epimorphic mapping.To construct an elf, take the intervals in the JI group of the temperament which lie within an octave and keep only the least complex (in terms of Benedetti height) representative for each corresponding interval of the temperament. Order the remaining JI intervals by increasing temperamental complexity, breaking ties by increasing Benedetti complexity. For each integer value 1 ≤ i ≤ V(2), set the ith element of a transversal for the scale to be the first interval c in the listing such that V(c) = i; which is to say, the interval of least temperamental complexity with ties broken by Benedetti height. The tempering of this transversal by a tuning map for the temperament is the elf.
Rank two examples
13-limit leapday
elfleapday7elfleapday8d
elfleapday9
elfleapday10
elfleapday12f
11-limit magic
elfmagic7elfmagic8
elfmagic8d
elfmagic9
elfmagic10
elfmagic12
11-limit miracle
elfmiracle7elfmiracle8d
elfmiracle9
elfmiracle10
elfmiracle12
13-limit myna
elfmyna7elfmyna8d
elfmyna9
elfmyna10
elfmyna12f
13-limit octacot
elfoctacot7elfoctacot8d
elfoctacot9
elfoctacot10
elfoctacot12f
13-limit qilin
elfqilin7elfqilin8d
elfqilin9
elfqilin10
elfqilin12f
13-limit sensus
elfsensus7elfsensus8d
elfsensus9
elfsensus10
elfsensus12
elfsensus12f
11-limit valentine
elfvalentine7elfvalentine8d
elfvalentine9
elfvalentine10
elfvalentine12
Rank three examples
11-limit jove
elfjove7elfjove8d
elfjove9
elfjove10
elfjove11c
elfjove12
13-limit madagascar
elfmadagascar7elfmadagascar8d
elfmadagascar9
elfmadagascar10
elfmadagascar12f
elfmadagascar14c
elfmadagascar15
11-limit portent
elfportent9elfportent10
elfportent11c
elfportent12
elfportent15
11-limit thrush
elfthrush7elfthrush8d
elfthrush9
elfthrush10
elfthrush12
11-limit zeus
zeus7trielfzeus8
elfzeus9
elfzeus10
elfzeus12
Rank four examples
Keenanismic
elfkeenanismic7elfkeenanismic8d
elfkeenanismic9
elfkeenanismic10
elfkeenanismic11c
elfkeenanismic12
elfkeenanismic19
Swetismic
elfswetismic8delfswetismic9
elfswetismic10
elfswetismic12
Valinorsmic
elfvalinorsmic7elfvalinorsmic8d
elfvalinorsmic9
elfvalinorsmic10
elfvalinorsmic11c
elfvalinorsmic12